Microbes in Aquatic Environment
Coliforms are used as indicator organisms because

they are present wherever enteric pathogens are present
None of these
both (a) and (b)
a testing procedure with great specificity is easy to perform

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Microbes in Aquatic Environment
__________ is an environment like __________ where microorganisms are functioning in an extremely thin film of water and where oxygen-containing air is close to them.

high oxygen diffusion environment; lakes
low oxygen diffusion environment; lakes
high oxygen diffusion environment; soils
low oxygen diffusion environment; soils

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